Impetigo is a skin infection caused by bacteria.
It is often called "school sores" because it affects children and is quite contagious.
Streptococcus pyogenes and/or Staphylococcus aureus are the microorganisms responsible for impetigo.
Impetigo most often occurs on exposed areas such as the hands and face.
It presents with pustules and crusted oozing patches which grow larger day by day.
Impetigo may be caught from someone else with impetigo or boils, or appear "out of the blue".
It often starts at the site of a minor skin injury such as a graze, an insect bite, or scratched eczema.
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